The Einstein Observatory Focal Plane Crystal Spectrometer
(FPCS) used the technique of Bragg spectroscopy to study cosmic
X-ray sources in the 0.2-3 keV energy range. The high spectral
resolving power (E/dE ~ 100-1000) of this instrument allowed it
to resolve closely spaced lines and study the structure of individual
features in the spectra of 41 cosmic X-ray sources. We present
an archival summary of the results as a concise record of the
FPCS observations and a source of information for future analysis
by the general astrophysics community. For each observation,
we give the instrument configuration, background rate, X-ray
flux or upper limit within the energy band observed, and spectral
histograms. We discuss examples of the contributions the FPCS
observations have made to our understanding of the objects
observed.